@misc{indiciae2d972a853baa,
  title = {Standard values for the solar constant and its spectral components},
  author = {Drummond, A. J. and Thekaekara, M. P.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710039308},
  note = {Source identifier: 19710039308}
}